Holder for thermionic valves and other electrical devices



Dec. 14, 1948. G. wAes'rAFF 2,456,572

HOLDER FOR THERMIONIC VALVES AND OTHER ELECTRICAL DEVICES Filed Feb. 2a, 1945 Patented Dec. 14,1948

some FOR THERMIONIC VALVES AND orrnm ELECTRICAL DEVICES George Wagstafi, Long-Eaton, England, .assignor to United-Carr Fastener Corporation, Cambridge, Mass.

Appl cation February 28, 1945, Serial No. 580,251

In Great Britain March 27, 1944 object of the present invention to dispense withthis flange and thereby cheapen the cost, the holder having means whereby it may be readily secured to an apertured support.

According to the present invention the holder comprises a body adapted to fit within an aperture in a support, the peripheral wall of the body being provided with axially spaced abutments adapted to be engaged by locking members fitted over or around the body from the upper and underface respectively of the support to secure the holder thereto.

The abutments may comprise the end walls of grooves formed in the peripheral wall of the body of the holder.

To enable the invention to be fully understood it will now be described with reference to the accompanying drawing, in which:

Fig. 1 is a sectional view of a thermionic valve holder on the line 4-4 of Fig. 4, mounted in an apertured supporting panel,

Fig, 2 is a plan view of the panel.

Fig. 3 is a perspective view of the valve holder,

Fig. 4 is a plan view of the holder,

Fig. 5 is a plan view of the lower half of a twopart screening can,

Figs. 6 and 7 show plan and side views of a locking ring, and

Figs. 8 and 9 show plan and side views of a resilient spacing washer.

As shown in the accompanying drawings, the valve holder comprises a body I free of projecting flanges. The upper face 2 of the holder normally has recesses (not shown) for housing pinreceiving contacts. The recesses and contacts are omitted from the drawings for the sake of clarity. The body I is of frusto-conical shape, or it may be substantially cylindrical, and has a peripheral wall 3, formed with a flat 4 whereby the body is D-shaped in cross-section. Three equally spaced grooves 5 extend from the upper face 2 along part of the axial length of the holder and have end walls 6. Two other grooves I extend from the underface'of the holder axially of the body and terminate in end walls 8. It will be observed that the grooves 5 and I are correlated so that the end walls 6 and 8 form two series of 3 (Cl. I'll-45) rows of abutments spaced apart axially o1 the body I.

One form of locking ring for securing the holder to the supporting panel I6 is shown in Figs. 6 and 7, and comprises a split metal ring 9 having a flange ID for engaging the flat 4, and inwardly projecting lugs II and upturned portions I2. This locking ring is adapted to engage the series of abutments 6 adjacent to the underface of the holder. The locking member for engaging the abutments 8 adjacent to the upper face 2, is formed integrally with the lower half a of a twopart metal screening can. The can a comprises a cylindrical wall I3 having a D-shaped projecting flange I4 and two inwardly extending lugs I5.

To mount the holder on the panel IS, the body I is first inserted into the screening can part a with the edge of the flange l4 engaging the flat 4 on the body, and the lugs I5 entering the grooves I and engaging the end walls 8. The portion of the body depending from the screening can is then inserted into the D-shaped aperture I! in the panel, the edge I8 engaging the flat 4 and ensuring the holder is correctly located. A resilient metal washer I9 is fitted over the lower end of the body I and the locking ring 9 is then sprung over the body to snap the lugs II into the grooves 5 to engage the end walls 6. The edge of the flange I0 registers with the flat 4 on the body I and ensures correct registration. To remove the holder the ring 9 is opened by forcing the portions I2 apart to permit the lugs II being disengaged from the grooves 5.

I claim:

1. A holder for thermionic valves and like electrical devices comprising a body adapted to fit within an aperture in a support, the peripheral wall of said body having two sets of axially spaced abutments, a locking ring disposed around said body on one side of said support having projections engageable with one set of said abutments and a screening member disposed around said body on the other side of said support having elements engageable with the other set of said abutments whereby said locking ring and said screening member cooperate to secure said holder to said support.

2. A holder for thermionic valves and like electrical devices comprising a body adapted to fit within an aperture in a support, the peripheral wall of said body having two sets of axially spaced abutments, a locking ring disposed around said body on one side of said support having projections engageable with one set of said abutments, and a screening can of greater diameter than the aperture in said support disposed around said body on the other side of said support, said can having inwardly extending elements engageable with the other set of said abutments whereby said locking ring and said screening can cooperate to secure said holder to said support.

3. A holder for thermionic valves and like electrical devices comprising a body adapted to fit within an aperture in a support, said body having a peripheral wall, an upper face and a lower face, said peripheral wall having two sets of axially extending grooves, the grooves of one set extending from abutments adjacent said upper face and intersecting said lower face, and the grooves of the other set being disposed intermediate those of said one set, extending from abutments axially spaced below those of said one set and intersecting said upper face, a closed ring member for engaging the upper surface of said support having projections engaging the abutments of said one set, and a split-ring lock- 4 ing member for engaging the lower surface of said support having projections engaging the abutments of said other set, whereby said closedring member and said split-ring locking member cooperate to secure said holder to said support.

GEORGE WAGSTAFF.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 723,082 Turner Mar. 17, 1903 903,768 Platt Nov. 10, 1908 947,154 Freeman Jan. 18, 1910 1,879,247 Beck Sept. 20, 1932 2,118,665 Churchill May 24, 1938 2,248,817 Eiben July 8, 1941 2,354,748 Franklin Aug. 1, 1944 

